.footer{
    position: fixed;
    bottom: 0px;
    padding: 0px;
    width: 100%;
    background-color: #424242;
    .navs{
        margin: 5px auto;
        width: 24px;
        height: 24px;
        background-size: 100%;
        background-repeat: no-repeat;
        box-sizing: border-box;
    }
    .columnchecked{
        color: #e1b080 !important;
    }
}